I can't say enough good things about my Sonos music system. If you
want to play MP3s in your house off a file server and you have more
than one room, take a look.

Sonos just got a little better today thanks to the new iPhone controller app. Free app
from Sonos lets you control the music queues in all your zones. Works
great. Sonos' wireless
controller is a big selling point for the system, I'm surprised
they developed an iPhone app as an alternative.

Setup was easy as with all Sonos network configuration. The only real
caveat is your iPhone has to be on Wifi on the same local network as
the Sonos system. It doesn't work via Edge, 3G, or Internet.